可生物降解的纳米CaCO3/BF/PHA/PE复合材料的制备及性能
Preparation and Properties of Biodegradable Nano-CaCO3/BF/PHA/PE Composites
吴静 1黄嘉园 1蓝峻峰 1陈燕萌 1叶有明 1韦周巧1
作者信息
- 1. 广西科技师范学院食品与生化工程学院无机绿色材料重点实验室,广西来宾 546100
- 折叠
摘要
研究以聚乙烯(PE)为原料,聚羟基脂肪酸酯(PHA)、改性后的纳米CaCO3和甘蔗渣纤维(BF)为复合填料,通过熔融挤压和注塑成型制备纳米CaCO3/BF/PHA/PE复合材料.通过力学性能测试、傅里叶变换红外光谱(FTIR)分析、热重(TG)分析、扫描电子显微镜(SEM)等表征方法,考察PHA含量、改性纳米CaCO3及BF的最佳配比及其含量对复合材料内部结构和性能的影响.结果表明:5%PHA、5%BF以及5%纳米CaCO3时,复合材料的力学性能最佳,达到12.9 MPa;在此配比下,纳米CaCO3/BF/PHA/PE复合材料的最大热分解温度达到463℃,高于改性前复合材料热分解温度(453℃).研究为可降解高分子材料的绿色发展提供了思路.
Abstract
In this study,polyethylene(PE)was used as the raw material,and polyhydroxyalkanoate(PHA),modified nano-CaCO3 and bagasse fiber(BF)were used as the composite fillers,and the nano-CaCO3/BF/PHA/PE composites were prepared by melt extrusion and injection molding.The effects of the optimal ratios of PHA,modified nano-CaCO3 and BF and their contents on the internal structure and properties of the composites were investigated by mechanical property tests,Fourier transform infrared spectroscopy(FTIR)analysis,thermogravimetric(TG)analysis,scanning electron microscopy(SEM)and other characterization methods.The results show that with 5% PHA,5% BF,and 5% nano-CaCO3,the mechanical properties of the composites were optimal at 12.9 MPa,and the maximum thermal decomposition temperature of the nano-CaCO3/BF/PHA/PE composites reached 437℃at this ratio,which was higher than the thermal decomposition temperature(453℃)of the composites before modification.The study provides ideas for the green development of degradable polymer materials.
关键词
复合材料/聚羟基脂肪酸酯/纳米碳酸钙/甘蔗渣纤维Key words
Composites/Polyhydroxyalkanoate/Calcium carbonate nanoparticles/Bagasse fiber引用本文复制引用
基金项目
广西科技计划项目(桂科AD20297139)
来宾市科学研究与技术开发计划项目(来科攻202403)
来宾市科学研究与技术开发计划项目(来科转220904)
出版年
2024
国家科技期刊平台
NSTL
万方数据